they are at the heart of the negotiations over the fiscal cliff. democrats want to raise them for the wealthy. republicans say no. >> now one leading republican may be breaking ranks. georgia senator saxby chambliss now says a no tax pledge signed by most republicans is standing in the way of getting a deal done. >> times have changed significantly. i care more about this country than i do about a 20-year-old pledge. i think we owe the debt and we've got figure out a way to pay it. >> specifically, chambliss was talking about grover norquist and his group americans for tax reform. they put out that no tax pledge. norquist talked about it on cnn's situation room". >> the commitment he made to the people of georgia was not to me. it was a written commitment to the people of georgia that he would go to washington to reduce government spending and reform government, not raise taxes. if he wants to change his mind and become a tax increaser, so we don't have to reform government, he needs to have that conversation with the people of georgia. >> there ar